[dangero]

They talk in detail about how at many well known startups, the early employees went on to start their own companies, which indicates that they were good early hires because they were great entrepreneurial thinkers.

It seems highly likely to me that the reason so many of the first employees started their own companies later is because they got a great exit and didn't need a regular job after that. In addition the experience of being an early employee at a unicorn startup probably teaches you a lot about how to build something similar again.